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Vishay General Semiconductor - Diodes Division SMCJ11A-M3/57T
- Part No.:
- SMCJ11A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ11A-M3/57T.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,175
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Product details
Overview
SMCJ11A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with 18.2 V maximum clamping voltage at 82.4 A peak pulse current and 11 V stand-off voltage. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power rails.
For engineers reviewing the SMCJ11A-M3/57T datasheet, SMCJ11A-M3/57T pinout, SMCJ11A-M3/57T application, or SMCJ11A-M3/57T equivalent, key selection criteria include unidirectional polarity, 12.2–13.5 V breakdown voltage range at 1 mA, 5 μA max reverse leakage at 11 V, -55 °C to +150 °C operating junction temperature, and halogen-free RoHS-compliant M3 suffix construction.
Technical Context
The SMCJ11A-M3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to suppress ESD and inductive switching transients. Its unidirectional configuration uses cathode-band marking and exhibits 0.080 %/°C temperature coefficient of VBR.
Designed for PCB-level protection on DC power inputs and signal lines, it complies with ANSI/IEEE C62.35 surge standards and meets J-STD-020 MSL Level 1 (260 °C peak reflow), enabling compatibility with automated SMT assembly without derating concerns below 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse working voltage before clamping begins |
| VBR min/max | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown threshold range defining turn-on precision |
| VC @ IPPM | 18.2 V at 82.4 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - Peak pulse power handling capacity under standardized transient waveform |
| ID @ VWM | 5 µA max - Low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ range | -55 °C to +150 °C - Full operational temperature envelope supporting under-hood automotive use |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint |
Pinout & Package
SMCJ11A-M3/57T uses the SMC (DO-214AB) package: a rectangular surface-mount case with matte tin-plated leads, 0.220–0.246 inch (5.59–6.22 mm) body width, and cathode band marking on the anode-side terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VIN exceeds VBR |
| Anode (unmarked end) | Reference/return path | Typically tied to system ground or low-impedance return plane for clamping action |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | M3 suffix confirms compliance with environmental regulations and JEDEC JESD201 Class 2 whisker resistance |
| Low incremental surge resistance | Enables tighter clamping (VC = 18.2 V) versus competing 1500 W TVS devices with higher dynamic impedance |
| MSL Level 1 rating | Supports single-reflow SMT assembly at 260 °C peak without preconditioning or floor-life restrictions |
| Glass passivated junction | Improves long-term reliability and moisture resistance in humid or thermally cycled environments |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications; M3 base version is commercial-grade but shares identical die and package |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load-dump transients up to 35 V and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before reaching LDOs or microcontrollers. Use Value: Limits peak voltage to ≤18.2 V during 82.4 A transients, preventing latch-up or gate oxide damage in downstream semiconductors. | Use Scenario: Analog output lines from pressure or temperature sensors routed across noisy motor control zones. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt ESD (IEC 61000-4-2) and coupled noise away from ADC front-end. Use Value: Sub-1 ns response and 5 µA leakage preserve signal integrity and measurement accuracy while surviving ±15 kV contact discharge. |
| DC-DC Converter Input Protection | Consumer Device USB Power Input |
Use Scenario: 24 V input to isolated flyback converter in factory automation equipment subject to relay coil kickback. IC Role / Device Role / Timing Role: Primary-side TVS absorbing inductive spikes generated by upstream contactors or solenoids. Use Value: 1500 W PPPM rating handles repetitive 10/1000 µs transients without degradation, extending system uptime. | Use Scenario: 5 V USB port on smart home hub exposed to hot-plug voltage overshoot and cable-induced surges. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to VBUS, protecting USB controller and PMIC from overvoltage events. Use Value: 11 V VWM provides 20% margin above nominal 5 V, while 18.2 V VC stays below absolute maximum ratings of common USB PHY ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A-E3/52T | Lower PPPM (400 W), SMA package (smaller footprint, lower thermal mass) | Restricted to lower-energy transients; unsuitable for load-dump or high-current inductive spikes | Select when board space is constrained and surge energy remains below 400 W. |
| SMCJ11CA-M3/57T | Bidirectional variant with same VWM, VBR, and VC; no polarity marking | Required for AC-coupled or dual-polarity signal lines where reverse voltage may occur | Choose for differential bus protection (e.g., RS-485) or when circuit polarity is undefined. |
Compared with SMAJ11A-E3/52T and SMCJ11CA-M3/57T, the SMCJ11A-M3/57T delivers 3.75× higher surge power handling in the same SMC footprint and maintains unidirectional polarity for optimized DC rail clamping-making it the preferred choice for robust 12–24 V system protection where energy levels exceed 400 W.
Availability
SMCJ11A-M3/57T is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and consumer device power input stages requiring stable component supply and halogen-free compliance.
Supply support for SMCJ11A-M3/57T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices with emphasis on reliability, efficiency, and application-specific performance.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where sustained surge immunity and AEC-Q101 readiness are critical.
FAQ
What is the breakdown voltage tolerance of SMCJ11A-M3/57T?
The SMCJ11A-M3/57T has a specified breakdown voltage range of 12.2 V to 13.5 V at 1 mA test current, per Vishay Document Number 88394. This ±5.5% tolerance ensures predictable clamping onset across manufacturing lots and temperature extremes, and is measured under standard conditions defined in ANSI/IEEE C62.35. The SMCJ11A-M3/57T maintains this specification across its full -55 °C to +150 °C operating junction temperature range.
Does SMCJ11A-M3/57T meet automotive qualification standards?
The SMCJ11A-M3/57T is a commercial-grade halogen-free part with M3 suffix and is not AEC-Q101 qualified. However, Vishay offers the functionally identical SMCJ11A-HM3/57T variant, which carries full AEC-Q101 qualification for automotive applications. Both share identical electrical characteristics, SMC package, and thermal performance. The SMCJ11A-M3/57T is suitable for industrial and consumer systems where AEC-Q101 is not mandated.
What is the maximum clamping voltage of SMCJ11A-M3/57T under surge conditions?
The SMCJ11A-M3/57T exhibits a maximum clamping voltage (VC) of 18.2 V when subjected to its rated 82.4 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is guaranteed per the Vishay SMCJ5.0A–SMCJ188CA datasheet (Rev. 09-Jan-2024) and represents the upper limit of voltage seen by downstream components during worst-case transient events. The SMCJ11A-M3/57T achieves this with low incremental surge resistance, ensuring consistent protection margin.
Can SMCJ11A-M3/57T be used in bidirectional signal protection?
No, the SMCJ11A-M3/57T is strictly unidirectional and must be oriented with its cathode band toward the protected line. For bidirectional protection-such as on AC-coupled data lines or differential buses-use the SMCJ11CA-M3/57T, which features symmetrical breakdown in both directions and no polarity marking. Using the unidirectional SMCJ11A-M3/57T on bidirectional signals risks reverse conduction failure or inadequate clamping during negative transients.
What is the thermal resistance of SMCJ11A-M3/57T from junction to ambient?
The SMCJ11A-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad per terminal, per Vishay Document Number 88394. This value assumes still air convection and defines safe power dissipation limits under continuous operation. For pulsed applications, thermal inertia allows brief surges beyond steady-state limits, but the SMCJ11A-M3/57T's RθJL of 15 °C/W supports efficient heat transfer to PCB copper.
SMCJ11A-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 82.4A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ11A-M3/57T FAQ
1.How can I place an order for SMCJ11A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ11A-M3/57T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMCJ11A-M3/57T reliable?
The price and inventory of SMCJ11A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ11A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ11A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ11A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ11A-M3/57T?
SMCJ11A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ11A-M3/57T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMCJ11A-M3/57T?
For technical support, including SMCJ11A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ11A-M3/57T requirements.
6.How does Aetrix verify that SMCJ11A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ11A-M3/57T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMCJ11A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ11A-M3/57T?
All SMCJ11A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ11A-M3/57T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMCJ11A-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ11A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ11A-M3/57T Tags
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